Tag Archives: ANDA Litigation

In Purdue Pharma L.P. v. Epic Pharma LLC, the Federal Circuit affirmed the district court decision holding four OxyContin patents invalid as obvious. In so doing, the court rejected Purdue’s arguments that its discovery of the source of the toxic impurity that was minimized in the claimed products did not support patentability, because the solution to the … Continue reading this entry Tags: ANDA Litigation,Oxycontin,Purdue Pharma

In Cephalon, Inc. v. Watson Pharmaceuticals, Inc., the Federal Circuit reversed the district court’s finding that two Orange Book-listed patents for Cephalon’s FENTORA® product were invalid, but affirmed the district court’s finding that Watson’s ANDA product would not infringe the patents. The Federal Circuit decision reviews the “undue experimentation” standard for lack of enablement, and … Continue reading this entry Tags: ANDA,ANDA Litigation,Cephalon,Enablement,Fentora,Infringement,Watson